WO2007125538A1 - Dispositif pour convertir l'energie des vagues et/ou l'energie maremotrice en energie electrique - Google Patents

Dispositif pour convertir l'energie des vagues et/ou l'energie maremotrice en energie electrique Download PDF

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Publication number
WO2007125538A1
WO2007125538A1 PCT/IN2006/000245 IN2006000245W WO2007125538A1 WO 2007125538 A1 WO2007125538 A1 WO 2007125538A1 IN 2006000245 W IN2006000245 W IN 2006000245W WO 2007125538 A1 WO2007125538 A1 WO 2007125538A1
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WO
WIPO (PCT)
Prior art keywords
hollow tube
energy
float
wave
gearbox
Prior art date
Application number
PCT/IN2006/000245
Other languages
English (en)
Inventor
Thothathri Sampath Kumar
Original Assignee
Thothathri Sampath Kumar
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thothathri Sampath Kumar filed Critical Thothathri Sampath Kumar
Publication of WO2007125538A1 publication Critical patent/WO2007125538A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
    • F03B13/1845—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom slides relative to the rem
    • F03B13/1855—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom slides relative to the rem where the connection between wom and conversion system takes tension and compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/13—Geometry two-dimensional trapezial
    • F05B2250/131—Geometry two-dimensional trapezial polygonal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/50—Inlet or outlet
    • F05B2250/501—Inlet
    • F05B2250/5011—Inlet augmenting, i.e. with intercepting fluid flow cross sectional area greater than the rest of the machine behind the inlet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Definitions

  • the present invention is in relation to wave energy devices. More particularly, the present invention relates to a wave energy device for concentrating and directly converting wave and/ or tidal energy into electrical energy.
  • Ocean energy is a vital source of renewable energy. It is abundant, more constant than wind and solar energy, well distributed around the globe and near much of the world's population. Nonetheless, little use has been made of ocean energy due to the difficulties in converting wave and/ or tidal energy into a more useful form of energy by name electrical energy.
  • the power flux within a unit crest length of a plane wave train in deep water is proportional to the wave period and to the square of the wave amplitude.
  • the power flux rate is 40kw/m if the amplitude is 1 m (gentle waves) and 1000 kw/m if the amplitude is 5 m (large waves).
  • the power per km of coastline is 40 mw and for 5 m waves it is 1000 mw.
  • Wave intensity is never steady and there is a large variability hourly, daily, and seasonally. The Sea environment is extremely hostile.
  • US Patent No. 4,045,148 (Morin et al) described utilization of turbine based generator system to convert wave and/ or tidal energy into electrical energy.
  • the proposed invention is associated with turbines which are sensitive to corrosion and hence it is not able to arrive at the instant invention.
  • US Patent No.4, 383,182 (Bowley et al) describes an apparatus includes a plurality of power producing modules disposed in a substantially constant velocity ocean current.
  • the proposed invention was not able to arrive at the instant application of invention, wherein a novel device is used to obtain extraordinarily high output.
  • US Patent Nos. 4,773,221 and 4,277,190 op.en ended hollow tube suspended beneath a float. The tube is being completely submerged and in a vertical orientation.
  • the proposed invention utilizes the kinetic energy bound with waves of water.
  • the instant invention utilizes both kinetic and potential energy associated with waves and/ or tides from a body of water into electrical energy.
  • US Patent No. 4,748,808 (Hill et al) describes a submersible fluid powered motor generator apparatus. However, the proposed invention was not able to arrive at the instant application of invention, wherein a novel device is used to obtain extraordinarily high output.
  • US Patent No. 4,754,157 (Windle et al) describes utilization of float type wave energy extraction apparatus using cylinder with inlet and outlet check valves. However, the proposed invention was not able to arrive at the instant application of invention.
  • US Patent Nos. 4,850,190 (Pitts et al) describes utilization of submerged ocean current electrical generators which and method for hydrogen production. However, the proposed invention was not able to arrive at the instant application of invention.
  • US Patent No. 4,954,052 (Simmons et al) describes utilization of wave powered pump.
  • the proposed invention suffers from the disadvantage of choking of pump over a period of time and leading to decrease in efficiency of the wave powered apparatus.
  • US Patent No. 6,756,695 (D. Hibbs et al) describes a method of and apparatus for wave energy conversions using a float with excess buoyancy.
  • the proposed invention was not able to arrive at the advantages of the instant invention.
  • In all the prior arts there is a genuine difficulty in transforming high forces at low speeds into lower forces at higher speeds needed for electricity generation.
  • the installation costs of such devices tend to be extremely large in comparison with the useful energy produced.
  • the devices have to be fixed to the ocean floor and hence can be fixed advantageously only in shallow depths. There is no prior art coming anywhere closer to the invention cited herein.
  • the principal object of the present invention is to concentrate and directly convert wave and/ tidal energy into electrical energy.
  • Another object of the present invention is to develop a wave energy device for concentrating and directly converting wave and/ or tidal energy into electrical energy.
  • Still another object of the present invention is to develop a wave energy device which is inexpensive to manufacture and easy to maintain.
  • the present invention relates to a device for concentrating and directly converting wave and/ or tidal energy from a water body into electrical energy, said device comprising walls (8) attached sideways at bottom of the hollow tube (1) to concentrate the waves and/ or tides towards opening of the hollow tube (1) to generate electricity; a) a method of constructing a device for concentrating and directly converting wave and/ or tidal energy from a water body in to electrical energy, the method comprising positioning hollow tube (1) vertically on the water; positioning walls (8) sideways at bottom of the hollow tube
  • the present invention relates to a device for concentrating and directly converting wave and/or tidal energy from a water body into electrical energy, said device comprising walls (8) attached sideways at bottom of the hollow tube (1) to concentrate the waves and/ or tides towards opening of the hollow tube (1) to generate electricity.
  • said device comprising a. an hollow tube (1) vertically positioned on the water; b. walls (8) attached sideways at bottom of the hollow tube (1) to concentrate the waves and/ or tides towards opening of the tube
  • the said wave and/ or tidal energy is both kinetic and potential energy.
  • said hollow tube (1) having an opening (5) towards the bottom of the tube.
  • the hollow tube (1) having any shape preferably selected from a group comprising rectangle, square, triangle, hexagon, octagon, ellipse and circular.
  • the float (2) having matching shape of hollow tube preferably selected from a group comprising rectangle, square, triangle, hexagon, octagon, ellipse and circular.
  • the said hollow tube (1) is either fixed onto a support from the ocean bed or floated vertically and moored with tiers.
  • the said hollow tube (1) and walls (8) are made of any material of construction that is structurally sound and made corrosion resistant.
  • the said float (2) is cylindrical in shape.
  • the present invention relates to a method of constructing a device for concentrating and directly converting wave and/ or tidal energy from a water body in to electrical energy, the method comprising a. positioning hollow tube (1) vertically on the water; b. positioning walls (8) sideways at bottom of the hollow tube (1) to concentrate the waves and/ or tides towards opening of the tube (1); c. placing a piston type float (2) having partial buoyancy at bottom of the hollow tube (1); d. connecting an overhead crankshaft (4) to the float (2) by at least one connecting rod (3); e. attaching at least one gearbox (6) to the overhead crankshaft (4); and f. connecting at least one generator (6) to the gearbox (6) to generate electricity.
  • said wave and/ or tidal energy is both kinetic and potential energy.
  • said hollow tube (1) having opening (5) towards the bottom of the tube.
  • the hollow tube (1) having shapes selected from a group comprising rectangle, square, triangle, hexagon, octagon, ellipse and cylindrical.
  • the float (2) having shapes selected from a group comprising rectangle, square, triangle, hexagon, octagon, ellipse and cylindrical.
  • hollow tube (1) is either fixed onto a support from the ocean bed or floated vertically and moored with tiers.
  • said hollow tube (1) and walls (8) are made of concrete.
  • said float (2) is cylindrical in shape.
  • said device can be installed either on shore or off shore.
  • the present invention relates to a process for concentrating and directly converting waves and/ or tidal energy from water body into electrical energy, said process comprising steps of: a) directing the waves and/ or tides towards hollow tube (1) to gush up the partially buoyant float (2) along the hollow tube (1) in order to increase height of water column; b) pushing up the connecting rod (3) attached to the float (2) to rotate the overhead crankshaft (4) which in turn is attached with a gearbox (6); and generating electricity through an generator (6) connected with the gearbox (6).
  • said waves and/ or tidal energy is kinetic and potential energy.
  • said process involves an upward and downward motion of the float (2).
  • said upward and downward motion is brought about using an overhead crank shaft (4).
  • said process involves directly converting kinetic and potential energy to electrical energy.
  • said process utilizes gearbox (6) having fixed and variable gear ratios.
  • said process converts up to 50 % of the wave and/ or tidal energy into the electrical energy.
  • Figure 1 shows the base position of the device before wave strikes.
  • Figure 2 shows the wave has struck and water level is rising up to half and crank shaft has turned up to the horizontal position.
  • Figure 3 show the water level has taken the float to maximum level and the crankshaft is at the highest level.
  • Figure 4 shows rear view of the device, wherein wave has receded and the float is pulling the crankshaft down on the other side.
  • an open ended rigid tube (Like a large dia concrete pipe) is either fixed on a support from the ocean bed or floated vertically and moored with tiers such that the one end of the tube touches the ocean water surface and other is in the air vertically.
  • a cylindrical inverted piston type float is made and floated inside the tube such that:
  • the outer diameter of the float is slightly less than the internal diameter of the rigid tube such that it can move freely throughout the tube.
  • the float should have a significant weight depending on size, partial buoyancy and other design consideration.
  • a minimum of one connecting rod is connected from the float to a fixed overhead crankshaft such that the ends of the rod are rotatable easily.
  • the rigid tube is designed such that when the connecting rod has pushed the overhead crankshaft to the top position, the further gushing in of water are released from the top of the tube to the ocean either by overflowing or by provision of holes.
  • the length of the connecting rod and size of the crankshaft extension may be made based on design parameters for smooth rotating.
  • a gearbox having varying gear ratios is to be attached to the end of the crankshaft.
  • the load on the inverted piston type float may be varied by using the gear ratios in such a manner that, depending on wave conditions maximum power can be extracted and smooth running ensured.
  • the gearbox is in turn connected to the generator, which can generate current.
  • This device directly converts mechanically the kinetic and potential energy from the water into a rotary motion from which the current can be extracted.
  • a wave strikes the opening of the device the total energy per unit width of the crest E is given by.
  • the varying of the gear ratios based on the kinetic energy available in the wave can help tap maximum energy.
  • the generator connected to the gearbox will generate the electricity. Let us assume that in a particular day the wave height has reduced. Then the total energy available in the wave is also reduced. In such a situation the torque that can be produced for a single upward stroke of the piston is also reduced. If the gear is set to such a ratio that the output speed is reduced (with lower current generation) then the lower torque will run the forward and downward stroke smoothly or else the equipment may stall and the entire revolution will not happen resulting in stoppage of current generation.
  • a tank model of approximately 100 inches long and 50 inches wide has been used for the study.
  • the test was done under normal wave patterns observed in wind generated waves (US Patent No.: 4,392,349).
  • the generated waves and/ or tides were concentrated by walls towards the openings of the hollow tube.
  • the gearbox having fixed gear ratio or variable gear ratio was selected according to the wave intensity and the generator was able to generate electrical energy.
  • the device of the instant application converted up to 50 % of the wave and/or tidal energy into the electrical energy.
  • the percentage value is calculated on the basis of input current for the pump generating the wave.
  • the percentage values are calculated on the basis of conventional energy conversion factors. (www.benwiens.com/energyl .htm 1 # energyl.27 and ⁇ http://dnr.louisiana.gov/sec/execdiv/techasmt/energy_sources/wind/windreportl981.ht) Advantages of the Invention
  • the proposed invention can increase the height of water column.
  • the proposed invention concentrates the wave and/ or tidal energy. 3.
  • the proposed invention utilizes a partially buoyant material.
  • the proposed invention can help in preventing the soil erosion in land due to rough seas.
  • the proposed invention is economical.
  • the proposed device is convenient for use.
  • the device of the instant invention can be fabricated easily.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

La présente invention se rapporte à un dispositif d'énergie avec les vagues, un procédé de construction dudit dispositif et le processus de concentration et de conversion directe d'énergie des vagues et/ou d'énergie marémotrice, depuis une masse d'eau, en énergie électrique, ledit dispositif comprenant des parois (8) fixées d'un côté au fond d'un tube creux (1) afin de concentrer les vagues et/ou les marées vers l'ouverture du tube creux (1) en utilisant un flotteur (2) avec une tige de raccordement (3) vers un vilebrequin (3) raccordé à une boîte de vitesses (6) et à un générateur (6) afin de générer de l'électricité.
PCT/IN2006/000245 2006-04-27 2006-07-13 Dispositif pour convertir l'energie des vagues et/ou l'energie maremotrice en energie electrique WO2007125538A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN768CH2006 2006-04-27
IN768/CHE/2006 2006-04-27

Publications (1)

Publication Number Publication Date
WO2007125538A1 true WO2007125538A1 (fr) 2007-11-08

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009016776A1 (de) * 2009-04-07 2010-10-14 Apollo Holzschutz Gmbh Vorrichtung zur Ausnutzung eines sich zeitlich ändernden Flüssigkeitsstandes eines Flüssigkeitsspiegels zum Betreiben eines Verbrauchers
WO2010139593A2 (fr) * 2009-06-05 2010-12-09 Zenergy Power Gmbh Centrale houlomotrice fonctionnant selon le principe de la colonne d'eau oscillante
WO2010140010A1 (fr) * 2009-05-30 2010-12-09 Leon Enrique Haluy Machine hydropneumatique à trois bras déséquilibrés
WO2012078120A3 (fr) * 2010-12-08 2013-08-22 Deset Enerji Muhendislik Sanayi Ve Ticaret Limited Sirketi Centrale électrique transformant l'énergie des vagues en énergie électrique et procédé de production
CN103573543A (zh) * 2013-11-21 2014-02-12 中国海洋大学 自启闭蓄能机构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH586848A5 (de) * 1973-08-02 1977-04-15 Neubauer Karl Vorrichtung zum entnehmen von energie aus einem in bewegung befindlichen gewaesser
US4103490A (en) * 1977-03-28 1978-08-01 Alexander Moiseevich Gorlov Apparatus for harnessing tidal power

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH586848A5 (de) * 1973-08-02 1977-04-15 Neubauer Karl Vorrichtung zum entnehmen von energie aus einem in bewegung befindlichen gewaesser
US4103490A (en) * 1977-03-28 1978-08-01 Alexander Moiseevich Gorlov Apparatus for harnessing tidal power

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009016776A1 (de) * 2009-04-07 2010-10-14 Apollo Holzschutz Gmbh Vorrichtung zur Ausnutzung eines sich zeitlich ändernden Flüssigkeitsstandes eines Flüssigkeitsspiegels zum Betreiben eines Verbrauchers
WO2010140010A1 (fr) * 2009-05-30 2010-12-09 Leon Enrique Haluy Machine hydropneumatique à trois bras déséquilibrés
WO2010139593A2 (fr) * 2009-06-05 2010-12-09 Zenergy Power Gmbh Centrale houlomotrice fonctionnant selon le principe de la colonne d'eau oscillante
DE102009024276A1 (de) * 2009-06-05 2011-01-20 Zenergy Power Gmbh Wellenenergiekraftwerk nach dem Prinzip der oszillierenden Wassersäule
WO2010139593A3 (fr) * 2009-06-05 2011-04-28 Zenergy Power Gmbh Centrale houlomotrice fonctionnant selon le principe de la colonne d'eau oscillante
US8541901B2 (en) 2009-06-05 2013-09-24 Rencon Gmbh Wave power generating installation based on the principle of the oscillating water column
DE102009024276B4 (de) * 2009-06-05 2015-09-10 Rencon Gmbh Wellenenergiekraftwerk nach dem Prinzip der oszillierenden Wassersäule
WO2012078120A3 (fr) * 2010-12-08 2013-08-22 Deset Enerji Muhendislik Sanayi Ve Ticaret Limited Sirketi Centrale électrique transformant l'énergie des vagues en énergie électrique et procédé de production
CN103573543A (zh) * 2013-11-21 2014-02-12 中国海洋大学 自启闭蓄能机构

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